Sentences with phrase «old sea ice in»
A preliminary evaluation of the measurement results shows that one - year - old sea ice in the Beaufort Sea (north of Canada / Alaska) is about 20 — 30 centimetres thinner this year than in the two previous years.
https://thinkprogress.org/ Not exact matches
A big «hole» appeared in August in the ice pack in the Beaufort and Chukchi seas, north of Alaska, when thinner seasonal ice surrounded by thicker, older ice melted.
It has also decreased the amount of the oldest, thickest Arctic sea ice, leaving polar waters dominated by thinner ice that forms in the fall and melts in the summer.
«The sea ice cover this year has reached a new record low,» says Mark Serreze, senior research scientist at the U.S. National Snow and Ice Data Center in Boulder, Colo. «It's not just that we beat the old record, we annihilated it.&raqice cover this year has reached a new record low,» says Mark Serreze, senior research scientist at the U.S. National Snow and Ice Data Center in Boulder, Colo. «It's not just that we beat the old record, we annihilated it.&raqIce Data Center in Boulder, Colo. «It's not just that we beat the old record, we annihilated it.»
Researchers led by Ian Eisenman, a climatologist at the Scripps Institution of Oceanography in San Diego, California, discovered a mismatch between an older and a newer version of the same NASA sea - ice data set that occurred when a satellite sensor was replaced in December 1991.
Scientists say sea ice in the Arctic shrank to an all - time low of 1.32 million square miles on Sept. 16, smashing old records for the critical climate indicator.
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Nature is the oldest theme in art: whether it be cave paintings of buffalo herds, the Laocoön Group fighting the snake, the hortus conclusus in medieval representations of Virgin Mary or Giorgione's looming Tempest, Flemish Still Life paintings, Manet's idyllic Luncheon on the Grass, Caspar David Friedrich's Sea of Ice, Van Gogh's psychedelic Sunflowers, Max Ernst's surreal forests, the spiritual mountain sceneries of der Blaue Reiter, or Arte Povera's energy objects and Land Art's earth formations — the list is endless.
Other factors would include: — albedo shifts (both from ice > water, and from increased biological activity, and from edge melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on ice (the former weakens the latter); — increasing, and increasingly warm, rain fall on ice; — «stuck» weather systems bringing more and more warm tropical air ever further toward the poles; — melting of sea ice shelf increasing mobility of glaciers; — sea water getting under parts of the ice sheets where the base is below sea level; — melt water lubricating the ice sheet base; — changes in ocean currents -LRB-?)
The United States, despite having substantial scientific operations in Antarctica and seeing ever more activity in its Arctic waters, has been relying on a pair of aging, decades - old heavy icebreakers to maintain mobility in ice - cloaked seas.
In 1985, 45 % of the sea ice in the Arctic was thick, older ice, said NOAA Arctic scientist Emily OsbornIn 1985, 45 % of the sea ice in the Arctic was thick, older ice, said NOAA Arctic scientist Emily Osbornin the Arctic was thick, older ice, said NOAA Arctic scientist Emily Osborne.
In fact, this winter not just old sea ice but also some glacial ice fragments were spotted in northern Alaska inshore waterIn fact, this winter not just old sea ice but also some glacial ice fragments were spotted in northern Alaska inshore waterin northern Alaska inshore waters.
The letter noted that the sharp recent reduction in the extent of sea ice, and particularly thick older sea ice, was far outpacing what had been projected by computer simulations.
The fate of sea ice in the Arctic Ocean is determined by a complicated mix of factors, including the pressure changes, with the biggest loss of old thick ice resulting more from a great «flush» of floes than melting, Dr. Rigor and many other scientists tracking the region say.
In addition to the loss of old thick sea ice, the increased mobility of sea ice in the Beaufort Sea is consistent with the high sea ice mobility seen in the Atlantic sector by the drift of the «TARA» during the DAMOCLES experiment (Gascard, EOS, VoIn addition to the loss of old thick sea ice, the increased mobility of sea ice in the Beaufort Sea is consistent with the high sea ice mobility seen in the Atlantic sector by the drift of the «TARA» during the DAMOCLES experiment (Gascard, EOS, Vsea ice, the increased mobility of sea ice in the Beaufort Sea is consistent with the high sea ice mobility seen in the Atlantic sector by the drift of the «TARA» during the DAMOCLES experiment (Gascard, EOS, Vsea ice in the Beaufort Sea is consistent with the high sea ice mobility seen in the Atlantic sector by the drift of the «TARA» during the DAMOCLES experiment (Gascard, EOS, Voin the Beaufort Sea is consistent with the high sea ice mobility seen in the Atlantic sector by the drift of the «TARA» during the DAMOCLES experiment (Gascard, EOS, VSea is consistent with the high sea ice mobility seen in the Atlantic sector by the drift of the «TARA» during the DAMOCLES experiment (Gascard, EOS, Vsea ice mobility seen in the Atlantic sector by the drift of the «TARA» during the DAMOCLES experiment (Gascard, EOS, Voin the Atlantic sector by the drift of the «TARA» during the DAMOCLES experiment (Gascard, EOS, Vol.
Sea ice less than one year old was somewhat thicker than has been observed in recent years, with a modal thickness around 1.8 m, after one of the coldest North American winters in recent years.
Compared to spring 2011, the old ice in the Beaufort Sea in May 2012 appears to be somewhat more consolidated and older overall (which typically implies thicker ice), with more ice of three years of age or greater and less first - year ice mixed in.
Finds that these losses in the oldest ice now extend into the central Arctic Ocean and adjacent to the Canadian Archipelago; areas where the ice cover was relatively stable prior to 2007 and where long ‐ term survival of sea ice through summer is considered to be most likely
Relatively large expanses of older, multiyear ice were observed in the Beaufort Sea with a modal thickness around 3.6 m, which was also somewhat thicker than has been observed in this region recently.
(09/28/2011) After the Arctic sea ice extent hit its second lowest size on record this summer — or lowest (depending on the source)-- comes another climate change shocker: in the past six years Canada's millennia - old ice shelves have shed nearly half their size.
One of the difficulties using charts based on in situ observations is that there was very little exploration poleward of the «marginal ice zone» (the area of partial sea ice cover near the ice edge), so in older reconstructions the ice concentration was often assumed to be 100 % beyond the marginal zone.
Major features are southwestward advection of older sea ice into the Beaufort Gyre and southwestward advection of different sea ice types toward Fram Strait in the Transpolar Drift.
The latest ice age product (Figure 1), provided by Maslanik for June 21, 2010, shows the same lobe of old ice extending through the Beaufort Sea and into the Chuckhi Sea that was seen in the end of April product (see June report).
Reasoning for a decrease in sea ice extent from recent years, perhaps approaching new record - low minimum, focuses on the below - normal sea ice thickness overall, the thinning of sea ice in coastal seas, rotting of old multi-year sea ice, warm temperatures in April and May 2010, and the rapid loss of sea ice area seen during May.
Reasoning for a new record minimum focuses on the below - normal ice thickness overall, the thinning of sea ice in coastal seas, rotting of old multi-year sea ice, and the rapid loss of sea ice area seen during May.
Will much of this ice remain in the central basin to rebuild the area of old, perennial sea ice over the coming years?
An interesting feature in both images is the tongue of old sea ice (red) extending into the southern Beaufort Ssea ice (red) extending into the southern Beaufort SeaSea.
Those low years were due in part to the loss of older sea ice, which was replaced by younger (hence thinner) ice that was more susceptible to summer melt.
Barber and colleagues report about the masking of different signatures of old ice (first - year ice and multiyear ice that survived summer melt) in the Beaufort Sea with potential implications for assessing the extent and state of the ice cover.
Polar bears are one of the most sensitive Arctic marine mammals to climate warming because they spend most of their lives on sea ice.35 Declining sea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice.35 Declining sea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionsea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea regionSea region.45
Arctic sea ice is melting faster during summer because it's mostly young ice now, but it has been older in the past and I believe it may accumulate in the future.
Each winter, it inhales cold air and causes a freeze up, then in the summer, it exhales a breath of older sea ice from the high Arctic into the seas on its southern edge.
and 2) Comiso published a subsequent paper (along with Fumihiko Nishio) in 2008 that added only one additional year to the IPCC analysis (i.e. through 2006 instead of 2005), and once again found a statistically significant increase in Antarctic sea ice extent, with a value very similar to the value reported in the old TAR, that is:
Like a cork removed from a champagne bottle, the early break up in these passages is allowing thick, old sea ice to flow south from the Arctic Ocean into the North Atlantic, choking areas used by fishing, shipping and ferry boats.
«I expect that this thin one - year - old sea ice will not survive the melting period in summer,» Dr. Stefan Hendricks assesses the situation.
A big «hole» appeared in August in the ice pack in the Beaufort and Chukchi seas, north of Alaska, when thinner seasonal ice surrounded by thicker, older ice melted.
This «new» model is a slight variation on an old idea about sea ice cycles and heat buildup in the ocean beneath the ice.